President Donald Trump declares that his “highest duty is to keep America safe,” yet he dismisses the threat posed by global warming.

However, in its report "Catastrophe Modelling and Climate Change," Lloyd's of London states that the 8 inches of sea level rise off the tip of Manhattan increased Superstorm Sandy’s surge losses by 30 percent, and that “(f)urther increases in sea level in this region may non-linearly increase the loss potential from similar storms.”

This statement is profoundly disquieting when one considers that the Fourth National Climate Assessment projects oceans to rise by 1-4 feet by the end of this century and that "a rise by as much as 8 feet cannot be ruled out." Twenty-five Atlantic and Gulf Coast cities are already experiencing accelerating rates of daily tidal flooding, and sea level rise is expected to be above the global average in these regions.

It's also important to look beyond our borders where, for example, millions of Bangladeshi's are farming on land that is within a meter of high tide. To understand the devastating impact that the advancing sea is having on this country, I recommend watching the documentary "30 million."

Sea level rise is caused by the warming of the oceans and the melting of land ice. Rapidly melting Himalayan glaciers feed rivers that sustain 1.65 billion people, many of whom live in India, Pakistan and China, which are nuclear powers.

Urgently reducing greenhouse gas emissions and funding adaptation should be top priorities for every politician who is concerned about world hunger, national security and global stability.

Terry Hansen, Hales Corners, Wis.